Scheduled method is not invoked via proxy [SPR-13914]

Mitchell Bosecke opened SPR-13914 and commented

I have several methods annotated with @scheduled and the majority of them run just fine but one of them in particular is not invoked via a proxy, it is invoked directly. The method is on a class annotated with @Service and @Transactional and that class has an appropriate interface with the method signature on it; i.e. I'm using JDK dynamic proxies.

The @scheduled annotation is on the implementation of the method. There is nothing unique about this method compared to my other @scheduled methods as far as I can tell.

That exact same method, when invoked via a web endpoint works as expected (via proxy and a transaction is available).

I've included some example code in the linked stack overflow post; let me know if I should copy some of that here.

Affects: 3.2.16

Reference URL: http://stackoverflow.com/questions/35184189/spring-scheduled-method-not-invoked-via-proxy-therefore-no-transaction

Issue Links:

• #20469 EnableAsync prevents EnableCaching from working in self-injection scenarios
• #18389 Consistent validation of annotated methods behind AOP proxies
• #18226 @EventListener does not work if put it at method in class that implements interface

The issue names @Scheduled, @Transactional, JDK dynamic proxies, and related proxy-based annotation issues, but provides no repository file or test. Start by reproducing the behavior from the linked example and tracing scheduled-method invocation and proxy handling. Done means the reported method is invoked consistently through the expected proxy, with a regression test covering the case.